package jdbc;

import jdbc.util.InputUtil;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.Scanner;

public class LoginUser {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入用户名：");
        String username = scanner.nextLine();
        System.out.println("请输入密码：");
        String password = scanner.nextLine();
        try(Connection connection = DBUtil.getConnection();) {
            Statement statement = connection.createStatement();
            String sql = "SELECT COUNT(*) FROM user WHERE username = '"+ username+"' AND password = '"+ password+"'";
            //查询是否存在该用户，存在则登陆成功，不存在则登录失败
            ResultSet rs = statement.executeQuery(sql);
            System.out.println(sql);
            if (rs.next()) {
                System.out.println("登录成功");
            } else {
                System.out.println("登录失败");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
